I Love to Write

Anyone have any advice for writers block? I've been trying to get the plot down for the novel I'm writing and I'm also trying my hand at spoken poetry and I'm just coming up blank. Also, how does one become better at using imagery? I read some poems and I just can't fathom how they come up with some of the images and phrases that they do.

Any advice would be appreciated! I really want to finally complete a piece of work and be proud of it.